From 2f154b191b6c1e9197e2e88f07a0aa4f120f1a31 Mon Sep 17 00:00:00 2001
From: Levi Zim <rsworktech@outlook.com>
Date: Wed, 21 Sep 2022 19:31:58 +0800
Subject: [PATCH] refactor: use grep -E instead of egrep

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 0b190f249..6b6e4bf5f 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ default:
 	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null\
         | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}'\
         | sort\
-        | egrep -v -e '^[^[:alnum:]]' -e '^$@$$'
+        | grep -E -v -e '^[^[:alnum:]]' -e '^$@$$'
 	@echo
 	@exit 1